CA 125 - Ovarian Cancer Marker
What does CA 125 - Ovarian Cancer Marker measure?
The CA 125 test measures the level of cancer antigen 125, a protein that may be elevated in some ovarian cancers and certain non-cancerous conditions. It may be used to help assess symptoms or findings that could be related to ovarian cancer, monitor response to treatment, or check for possible recurrence after treatment. CA 125 results are interpreted alongside medical history, examination findings, imaging, and other tests.
This overview is educational. Use the recorded preparation, sample and lab-partner details below for collection guidance, and confirm any missing information before collection.
Compare eligible lab partners
Prices, report times and availability are shown from the catalog records for each eligible partner.
- Sample for analysis
- Serum (1 mL)
- Report time
- 11:00/18:00
Preparation and specimen requirements can vary by test and laboratory. Follow the instructions shown for your selected partner and any advice from your healthcare professional.